Also known as Jack-In-The-Pulpit · Japanese Arisaema · Japanese Cobra Lily
Arisaema serratum is a distinctive woodland perennial with a hooded spathe that can vary in color, typically found in shaded, moist environments.
At-a-glance light, water, soil, and growing conditions from plant data
Partial Shade
50% intensity
Prefers dappled shade or bright indirect light. Avoid direct, intense sunlight.
Moderate
50% intensity
Maintain consistent moisture during growth, reduce in dormancy.
Well-drained, humus-rich
50% intensity
Moderate
50% intensity
Prefers cool to moderate temperatures during growth. Tolerates a range, but protection from extreme heat is beneficial. Dormancy requires cooler temperatures.
Outdoor
50% intensity
Low
25% intensity
Feed sparingly with diluted liquid fertilizer during the growing season.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist during the growing season, but avoid waterlogging. Reduce watering significantly as the foliage begins to yellow and die back in late summer or autumn.
In dormancy, water very sparingly, just enough to prevent the soil from drying out completely.
Pruning is generally not required for Arisaema serratum beyond removing spent flower stalks or yellowing/dead foliage. Cut back the dead leaves and stems after the plant has naturally senesced in late autumn to maintain a tidy appearance and prevent fungal issues.
Propagation is typically done by dividing the corms during the dormant season or by sowing fresh seeds in autumn. Seeds may take several years to germinate and mature.
Corm division is a more reliable method for obtaining mature plants sooner.
Repot Arisaema serratum every 2-3 years, or when the corm has outgrown its container. This is best done during the dormant period in late autumn or early spring before new growth emerges.
Use a well-draining potting mix with good aeration.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Arisaema Serratum (Arisaema serratum)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Alismatales |
| Family | Araceae |
| Genus | Arisaema |
| Species | Arisaema serratum |
Similar in genus Arisaema
Answers based on plant encyclopedia data
